KD5036 RS-652 Front Brake Pads - StopTech ST60

Barbaro Racing KD5036 RS-652 front brake pads for StopTech ST60, StopTech ST60 using1903 profile, nominal18mm, Alcon TA6 calipers. RS-652 is Barbaro's extreme hybrid race compound for steel and carbon-ceramic rotors (50–800°C, μ 0.49–0.57 on steel). Pad shape KD5036: 152 × 74.6 × 18 mm; interchanges with AP Racing CP5070D51, Ferodo Racing FRP3054.

Specifications

Barbaro part number	KD5036
Compound	RS-652
Barbaro factory code (SKU)	D50365N5
Axle	Front
Dimensions (L × H × T)	152 × 74.6 × 18 mm
Drawing note	First drawing rotated (152 vertical x 74.6), second drawing 152 x 74.6 x 18 X4 - agree. Backing plate 5.5, friction 50.6; edge view shows two slots.
Supplied as	One axle set
Also available for KD5036	KD5036 C-01 Premium Street, KD5036 S-01 Street & Track

Caliper fitment

Caliper brand	Caliper	Details
StopTech	ST60	51 mm friction face
StopTech	ST60 using1903 profile, nominal18mm
Alcon	TA6

Fitment is compiled from the Barbaro Racing application catalogue and Barbaro factory data, together with the vehicle listings of the interchange part numbers below. Brake packages can differ within one model — please compare your current pads with the dimensions and drawing, or send us your VIN, before ordering.

Cross-reference / interchange numbers

Ferodo Racing	FRP3054
PAGID Racing	1903
AP Racing	CP5070D51

Interchange numbers identify the matching pad shape. Friction material, shims and wear-sensor hardware can differ between brands.

About the RS-652 compound

RS-652 · The extreme hybrid

Seven years in the making. Endurance and sprint on both carbon-ceramic and steel rotors with zero fall-off, protected by a self-renewing 1–3 micron transfer film. Average friction 0.555 μ — measured beyond PAGID RSL1 (0.510) and Endless MA45B (0.438).

Temperature range: 50–800°C
Friction: μ 0.49–0.57 (steel); rising with temperature on CCB
Discs: Steel + carbon-ceramic
Lock threshold: 95 bar (RS-635: 65 bar)
+46.1% lock threshold — 95 bar vs 65 bar
On CCB, friction rises with temperature — 0.689 μ at 800°C
Disc wear 0.001 mm — 1/9 of RSL1, 1/18 of MA45B
Ideal for: TCR, GT and touring-car racing on steel or carbon-ceramic discs

RS-652 full specifications on barbaro-racing.com

About Barbaro Racing

Barbaro Racing (野蛮人) is the performance brand of the CAC Racing Division — proprietary compounds developed entirely in-house. Development begins on the dynamometer and ends on the circuit: every friction formula is bench-tested to destruction before earning the right to carry the Barbaro name. All compounds are validated against GB5763-2018 national standards; Street Series compounds are asbestos-free.